A domain is a identifier for IP addresses. We use domains because it is much easier to remember domains rather than IP address. If you choose http://18.104.22.168 compared to http://google.com then google.com will be the right choice. We barely use the IP address that is cloaked by the domain but we will never know until they might be useful. So here is a guide to get the IP address of a domain. We will be using Windows 7 as the OS for this guide.
Steps: Go to Start > Search programs and files > type cmd click enter or > click open cmd.exe at the results
Just type ping <domain> as the command. Example in the image below and just copy the IP address and your done!